MAQUINA DE SOLDAR ELECTRICA

摘要

1,048,333. Welding by fusion. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 31, 1965 [June 9, 1964], No. 23129/65. Heading B3R. An arc welding machine for welding a component 8, Figs. 1 and 3, not shown, to a workpiece 12 on a small diameter circle has a torch B, having a thermally insulating tubular member 38 capping and protecting a central part 10 of the component 8 during welding and an electrode 40 outside the tubular member 38 rotated around the axis of the tubular member 38 by a drive 50, and a support A for the torch B provided with mechanism for aligning the axis of the torch B with that of a component 8. The components 8 are thermocouples having a conductor 10 connected by a brazed joint. The support A consists of a frame 16 securable by bolts 18 to the workpiece 12 and a compound slide arrangement 21, 22 carrying the torch B. The torch B has a casing 36 carrying a ceramic nozzle 42 to which argon is fed and an inner part rotatable by a motor 50 and comprising a conductive tube 44 carrying a tungsten electrode 40 and the tubular member 38. The torch B is adjustable longitudinally on the slide 22 by a rack and pinion device. In a modification, Fig. 5, not shown, the torch B1 is connected to the slide 221 by a releasable coupling and the torch is provided with an axial passage extending from the tubular member through the whole length of the torch. Thus thermocouples having very long conductors 101 can be welded by threading the conductor through the torch and coupling the torch to the slide 221.